I am almost 51 years old and masturbate but I feel I get fever

I have been masturbating since age 16. I am single have had few partners in my life but on occasions, I had no partners for even few years. As a teenager I used to hate the fact that I masturbate, But as I grew old I was told it is good for the body. Once at age 37 I asked my doctor and he recommended it. Since I entered my late 30s years I felt when I overmasturbate even in summer I feel hot fever and sometimes shaking in my body and pain for few days. However when I asked my Doctor he said this has nothing to do with masturbating and could be a virus.

Anyways I did not have this issue until now. I feel really sick and hot fever after I masturbate. My question is is this normal and related? I also have G6PD deficiency so I do not want to take any medicine without knowing if it is harmful or not! any help? Thanks